ToNumber fix...
ToNumber fix...

This basically reverts my recent change to ToPrimitiveNum.  I'm not sure
what I was thinking there...it's wrong.

logchi/LambdaS5,logchi/LambdaS5,lijunsong/LambdaS5,brownplt/LambdaS5,lijunsong/LambdaS5,brownplt/LambdaS5,brownplt/LambdaS5,lijunsong/LambdaS5,logchi/LambdaS5